True Precision match-grade threaded drop-in barrel for the Glock 17 in 9mm, finished in TiN gold. Drops into Glock 17 Gen 1-4 frames with no fitting, and threads 1/2x28 for direct muzzle-device or suppressor attachment. Machined from 416R stainless steel with proprietary broach-cut rifling - clean accuracy gains over the OEM polygonal bore and safe with jacketed, cast, and lead ammo. Specifications Fits: Glock 17 Gen 1-4, 9mm Luger Material: 416R stainless steel Finish: TiN gold Muzzle thread: 1/2x28 Thread protector included Rifling: broach-cut, 1:10 left-hand twist Chamber: SAAMI-spec, fully supported Build notes : Drop-in fit - no gunsmithing. Confirm thread direction (left-hand twist rifling, right-hand muzzle thread) and pitch before mounting a muzzle device or suppressor adapter. Finish note The TiN gold barrel finish is a decorative coating and will show wear at metal-to-metal contact points (the locking lugs and barrel hood, where the barrel contacts the slide) over time with use. This is normal and does not affect function or accuracy. DISCLAIMER: "GLOCK" is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com. STATE RESTRICTION NOTICE This product may be regulated as an "assault weapon" feature or component (e.g., threaded barrel, muzzle device/compensator, or assembled upper) and may be restricted or prohibited in CA, CT, DC, HI, IL, MA, MD, NJ, NY, RI, VA, WA, and select municipalities. It is the buyer's responsibility to verify local, state, and federal laws before purchase. Orders that cannot ship to a restricted address will be canceled and refunded.